They were only hearing, “The one who once persecuted us is now proclaiming the good news ¹  of the faith he once tried to destroy.”

But when Cephas ¹  came to Antioch, ²  I opposed him to his face, because he had clearly done wrong. ³ 

Now this matter arose ¹  because of the false brothers with false pretenses ²  who slipped in unnoticed to spy on ³  our freedom that we have in Christ Jesus, to make us slaves. ⁴ 

Is the law therefore opposed to the promises of God? ¹  Absolutely not! For if a law had been given that was able to give life, then righteousness would certainly have come by the law. ²